Conclusion: I bought these along with the 528's as re-placements for my MTC...Because they are 2 OHM they effectively double the power of my head unit which is stock....( and cannot be re-placed )....I have gone to full volume with these without them distorting , which I find amazing.
Conclusion: I dropped four of these into my 2009 328i - couldn't believe how bad the stock speakers were. Amazingly bad. I have always been impressed with JBL speakers and thought at this price, I would give them a try. Best $100 I have spent in a long time. I can even play the system at the maximum volume w/o any distortion. That is more a function of the head unit / amp, but either way I am sure the speakers will last a long time because of this compatibility.
Conclusion: I own a 2010 BMW E90, great car but the BMW Professional sound system is awful, especially the rear deck 4 inch factory woofers (BMW bean counters took out all the tweeters and the amp on this car in 2010). One of my factory rears was crackling, and degrading the sound to the point where I couldn't stand listening.
Conclusion: I got these because I needed some 2 ohm speakers to replace some broken bose speakers. They are working great. Sound better than the $440 bose replacements the audi dealer wanted me to buy. It would have been nice if they had made another 4 attachment tabs around the edges to better match my asymmetric audi door mounts but that's not realistic.
Summary: Habe diese Lautsprecher in den Hintertüren des 407 eingebaut. Grunde hierfür waren u.a. das ich einen Subwoofer auf die Hinteren Lautsprecher Leitungen gelegt habe. Sprich die Originalen Boxen mit 4 Ohm waren mies. Die Qualität dieser sowieso. Alles in allem kann man es sich anhören... Für das Geld allerdings n bischen Magerer Klang.